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FilelightTreeSize Free
Free

Free and open source under the GPL.

 Freemium

TreeSize Free is free for private and commercial use. TreeSize Personal, Professional and…

Windows, Linux Windows
  • The ring chart makes the biggest space consumers immediately obvious
  • Scans remote and network locations as well as local disks
  • Reads the NTFS master file table, so scans finish quickly
  • Folder tree sorted by size, updating while it scans
  • Pulls in KDE libraries on non-KDE desktops
  • Windows only and closed source
  • Duplicate search, reports and exports need a paid edition
Downloadable app Downloadable app
Open source Closed source
License: GPL-2.0 License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.